Antifriction side bearing.



H. M. PERRY.

ANTII-RICTION SIDE BEARING.

APPLICATION FILED MAY 25, I9I7. 1,,A7, Patented Aug. 14,1917. I

2 SHEETS-SHEET I.

H. M. PERRY.

ANTIFRICTIQN SIDE BEARING.

APPLICATION mzo MAY 25-. 1912.

1,236,478. Patented Aug. 14,1917. E

2 SHEETS-SHEET 2.

' HUBER!!! Ill. PERRY, OF CHICAGO, ILLINDIS,"lASSIG1\TOR TO ALBERT G.WELGH, TRUSTEE '01? EDWIN S. WOODS, DECEASED.

ANTIFRICTIONSIDE BEARING.

Specification of Letters Patent. Patented Aug. 14, 1917.,

Application filed May 25,1917. Serial No. 170,827.

To all whom it may concern:

Be it known that I, Hunnn'r M. PERRY, a

citizen of the United States, and a resident of Chicago, in the countyof Cook and-State of Illinois, have invented certain new and 1accompanying drawings, and to the letters of reference marked thereon,which form r a art of this specification. his invention relates. toimprovements in antifriction side. bearings and consists of the mattershereinafter described and more particularly pointed out in the appendedclaims.

The object of the invention .is to provide an antifriction, side bearingcomprising but few parts so arranged that they will automatically adjustthemselves to the shifting positions of the body and truck bolsters of arailway car, so that the transmitted load is at all times distributedequally to the antifriction element in the plane of its ro-- tativeaxis.

Other objects together with the several advantages of my improvedantifriction side bearin ceed w1th my specification.

will more fully appear as I pro- 2 In the drawings: Figure 1 illustratesa transverse, sectional view through an antifriction side bearingembodying my invention, the plane of the '35 sectionbeing indicated bythe line ,1 '-1 of Fig. 2.

Fig. 2 illustrates a top plan View of the same. I 1 Fig. 3 illustrates a'longitudmal section through the antifriction side bearing, the

plane of the section being indicated by the line 3-3 of Fig. 2.

P Fig. 4 illustrates a perspective view of a rocking member or shoeforming a part. of

my improved antifriction side bearing.

Fig. 5 is a view similar to that shown in .-Fig. 1, and illustrates amodifiedform of my improved antifriction sidebearlng.

Referring now in detail to that embodiment ofthe invention illustratedin the accompanying drawings and particularly in Fi s. 1 to 4 inclusive:10 indicates a casing an '11 indicates an antifriction roller coning isspecifically illustrated herein, as of the type which is adapted'tobe'attached to the truck bolster of a railway car. 12 indicates saidtruck bolster and 13 indicates 'the associated body bolster. The bearingis adap ed to transmit load from said body bolster to said truck bolsterin a familiar manner. The truck bolster is illustrated in this instanceas constructed to present a horizontal top face upon which the bearingrests.

The casing 10 .is preferably made rectangular and somewhat elongated inplan and is open at its top and bottom. It has upright side and endwalls 14, 15, respectively, and has at the bottom edges of said walls,horizontal cars 16 by meansof which it is attached to the truck bolster12. A strengthening or bracing ribl6 connects each car 16 with theassociated side wall and ventilation openings 17 are provided in thebottom edge of each side wall between the ribs 16 and the adjacent endwalls 14. The

7 bottom, inner edges of the end walls 14 are recessed to provideshoulders 18 (see Fig. 3) to receive and hold in place the marginal endsof a flat wear late 19, which closes the open bottom of Said casing whensaidc'asing is attached to the truck bolster.

Within the casing '10 and resting upon the wear 'plate l9, is a rocker20 (see Fig.

, 4) which approximately fills said casing. Said rocker is capable of alimited, rocking movement and is made in the form of an open top,rectangular, comparatively shallow shell having a horizontal, bottomWall 21, upright side walls 22 and upright end walls 23 whicharepreferably made higher at their middle and thicker; than said sidewalls 22. Thebott'om surface 24 of the horizontal wall 21 is curved orrounded throughout its greater length from end to end of the rocker, theend parts of the bottom surface of said horizontal wall being formed toprovide transverse stop shoulders 25 for a purpose soon to appear. Thesaid rounded surface 24 is preferably a cyllndric surface describedabout an axis located in the trans verse median plane of the rocker,preferably at a considera le distance above the top sur- Y face oftheantifriction roller 11. The axis of curvature of said cylindricsurface 24 is tained therein. The antifriction side bearnon-rotativelymounted in suitable openings formed in the thickened end Walls 23 of therocker, a journal sleeve or bushing 27 being secured in said roller andbearing upon said shaft. As shown the shaft 26 is cut away or flattenedat one of its ends as at 28, the associated hole in one of the end Wallsof the rocker being formed to receive said flattened end and hold saidshaft against ro-tative movement. Ventilation openings29 are provided inthe bottom horizontal Wall of the rocker which open into the interior ofthe casing 10, so that dust, dirt, or other foreign substances cannotaccumulate in the interior of said rocker.

On the outer face of each side wall of the rocker, at its. middle andnear its rounded, cylindric, bottom surface and in the plane of itstransverse median axis, are laterally extending studs 30 which projectinto downwardly opening, hollow, U-shaped housings provided for bybosses 31, made in-. tegral, as shown, with the side walls 15, of thecasing. This structure just described holds the rocker in alinement withthe easing and prevents endwise, slipping movement of the rocker withinthe casing during its operation, but does not prevent the rockingmovement thereof.

In Fig. 5 is shown a modified form of the invention, which is moreparticularly adapted for use in connection with. a truck bolster havinga bearingfsurface'which is inclined to the horizontal instead of being'arranged in a horizontal plane as before mentioned. In this instance,the truck bolster -12 is shown as inclined and no wear plate 19 is used.The rocker QO en-gages directly upon said body bolster. Under suchcircumstances, I preferably "describe the cylindric bearing surface 24of the rocker 20" about an axis located in a plane above and extendingat a right angle to the inclined bearing surface of the truck bolster 12all of the other parts of the bearing, as awhole, being substantiallythe same as before described and illustrated in Figs, 1 to 4 inclusiveof the drawings.

It is apparent that when the load is greater at one end of theantifriction element or roller 11, than it is at the other,

the rocker will rock crosswise ofthe casing and automatically bring theantifriction element or roller 11 into such position as to present thefull line, intended contact thereof to the body bolster. This rockingmovement of the rocker is limited by the engage ment of the transversestop shoulders 25 with the surface "pen which the rocker has 5 rockingbearing.

The improved side bearing thus provides for-the relative rocking orswaying movement of thebody and truck bolsters in their vertical planesand eliminates unequal wear upon the roller 11.

friction side hearing, I have referred to cer- I tain details ofmechanicalconstruction and arrangement of parts I do not wish to belimited thereto except as may be pointed out in the appended claims.

I claim as my invention:

1. An antifriction side bearing comprising a casing adapted forattachment to a truck bolster, a rocker having side members, anantifrictionroller rotatively mounted in said side members, said rockerhaving a cylindrical bottom with its axis arranged transversely of theaxis of said roller, and means providing a flat seat for thecylindrical.bottom of said rocker. I

2. An antifriction side bearing comprising a casing adapted forattachment to a truck bolster, a rocker consisting of a shell havingside and end Walls and a bottom wall,

-an antifriction roller rotatively mounted in said "side walls, thebottom wallof said rocker having a cylindrical surface with its axisarranged transversely of the axis of said roller and in a planeextending transversely of said bolster and at right angles to the topplane thereof, and means provid- 1 ing a flat seat for the bottomsurface of said rocker.

3. An antifriction side bearing compris- :ing a casing adapted forattachment, to a truck bolster, a rocker having side members, anantifriction roller rotatively mounted 1n said side members, said rockerhaving a cylindrical bottom with its axis arranged transversely of theaxis of said roller, means providing a Hat seat for the cylindricalbottom of said rocker, and means at the ends of the bottom surface ofthe rocker to engage said flat seat and limiting therocking movementof'said rocker.

4:. An antifrictionvside bearing comprising a casing adapted forattachment to a truck bolster, a. rocker having side members, anantifriction roller rotatively mounted in said side members, cylindricalbottom with its axis arranged transversely of the axis of said roller,and

means providing a flat seat for the cylindri-' cal bottom of saidrocker, said means insaid rocker having a eluding a plate protecting thetop of said truck bolster, a rocker having side members, an antifrictionroller rotatively mount ed in said side members, said rocker having acylindrical bottom surface the axis of which is arranged transversely ofthe axis of said roller, and means providing a flat seat for the bottomof said rocker, said rocker and casing being provided with associatedparts to lock said rocker to its seat but periniting its free rockingmovement.

6. An antifriction bearing comprising a casing, means providing a flatbearing surface at the bottom of said casing, a rocker in said casing,said rocker having a longitudinally arranged cylindric bearing surfaceadapted to rock on said flat bearing surface, shoulders at the ends ofsaid curved bearing surface, limiting the rocking movement of saidrocker, a shaft fixed in said rocker and extending transversely to saidcylindric bearing surface, a roller having a bushing journaled on saidshaft, and means on said rocker between its ends adapted to coact titwith fixed parts of the casing preventing endwise slipping or twistingmovement of said rocker on said flat bearing surface.

7. An antifriction bearing comprising an open top casing, a plateconfined in the bottom of said casing and providing a fiat bearingsurface, a rocker in said casing, said rocker having a longitudinallyarranged, cylindric bearing surface adapted to rock on said flat bearingsurface, shoulders at the ends of said cylindric bearing surface,limiting the rocking movement of said rocker, a shaft fixed in saidrocker,and extending transversely to said cylindric bearing surface, aroller having a bushing journaled on said shaft, and means on saidrocker between its ends adapted to coact with fixed parts of the casingto prevent endwise slipping or twisting movement of said rocker on saidplate.

In testimony, that I claim the foregoing as my invention 1 afiix mysignature in the presence of two witnesses, this 4th day of May A. D.1917.

HUBERT M. PERRY. Witnesses:

KARL W. DoLL, R. A. RAYMOND.

